Hello My Name Is Ron Murphy , I'm 22 175

Hello my name is Ron Murphy , I'm 22 175 lbs and currently seeking a second opinion . Also before I mention my symptoms I will say I had a rare disease when I was 8 called Steven johnsons disease . Allergic reaction . I don't know if it's linked but I moist mentioning it . Well I've had these symptoms for about 9 months . I'll get throb , grown pain , penis pain , a lil pinch feeling on my shaft , every now in again a lil redness . It will subside. But it kind of feel a heaviness down they're and every now in again it'll go down my left leg . I've had all the std tests planned parenthood offers . Came back okay , and then I went to the doc he said he seen no problems just a tiny sits on where my scrotum and base of my penis meets . He drained it with a needle , no problems . But at this point I'm kinda at a loss for answers . He also say to wear briefs not boxers for my suspension but I've always wore briefs . In this time frame I've took amoxicillin and demoxicillin . But no help . So just need a direction to go . Thank you for your time .